Here are a few citations where the information that we used can be found as well:
( 2010). In Britannica Book of the Year, 2002. Retrieved October 14, 2010, from Encyclopædia Britannica Online School Edition: http://school.eb.com/eb/article-9384010
World Population Estimates, 1900-2000. (2010). In World History: The Modern Era. Retrieved October 14, 2010, from http://worldhistory.abc-clio.com/
U.S. census survey. Image. U.S. Census Bureau, Public Information Office. (2010). In American Government. Retrieved October 14, 2010, from http://americangovernment.abc-clio.com/
Brown, Evan. (2010). Counting America: The 2010 Census: Background. In American Government. Retrieved October 14, 2010, from http://americangovernment.abc-clio.com/
( 2010). In Britannica Book of the Year, 2002. Retrieved October 14, 2010, from Encyclopædia Britannica Online School Edition:
http://school.eb.com/eb/article-9384010
World Population Estimates, 1900-2000. (2010). In World History: The Modern Era. Retrieved October 14, 2010, from http://worldhistory.abc-clio.com/
U.S. census survey. Image. U.S. Census Bureau, Public Information Office. (2010). In American Government. Retrieved October 14, 2010, from http://americangovernment.abc-clio.com/
Brown, Evan. (2010). Counting America: The 2010 Census: Background. In American Government. Retrieved October 14, 2010, from http://americangovernment.abc-clio.com/
immigration. (2010). In American Government. Retrieved October 14, 2010, from http://americangovernment.abc-clio.com/
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